Cass R. Sunstein, Columnist

A Bad Nudge From California

Cancer warnings on coffee? Be serious.

It won't kill him.

Photographer: John MacDougall/AFP/Getty Images
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Should coffee come with a cancer warning?

As a matter of policy, the answer seems obvious: Of course not. As a matter of law, it’s much more complicated, at least in California. A tentative judicial ruling in Los Angeles County last week suggests that when people go to the local coffee place, their morning ritual is going to be accompanied by a jolt of fear.